Concrete pavement brick and preparation method thereof

Abstract

The invention discloses a concrete pavement brick which comprises the following raw materials in parts by weight: 20-30 parts of cement, 8-10 parts of stones, 15-25 parts of quartz sand, 13-18 parts of construction wastes, 8-13 parts of straws, 15-22 parts of water, 3-7 parts of a water reducing agent, 5-8 parts of VAE (Vinyl Acetate Ethylene) emulsion and 15-22 parts of epoxy resin glass fiber powder residues. The preparation method comprises the following steps: grinding and mixing the construction wastes and the epoxy resin glass fiber powder residues, mixing water, the water reducing agent and VAE emulsion, stirring and mixing the aqueous solution and materials to obtain pavement brick paste, performing low-frequency high-amplitude vibration on the pavement brick paste, and performing pressure forming by a pressure head, thereby obtaining the concrete pavement brick. The concrete pavement brick disclosed by the invention is low in cost, excellent in performance and long in service life; and the preparation method disclosed by the invention is simple in process and suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete pavement brick and a preparation method thereof. Background technique [0002] Concrete pavement bricks are made of cement and aggregates as the main raw materials through processing, vibration and pressure or other molding processes, and are used to lay concrete pavements such as urban road sidewalks, urban squares, and ground engineering blocks and slabs. However, the raw materials of this pavement brick have a great demand for natural stones and sand, and are extremely dependent on the mining of the natural environment, which has brought serious impacts on the ecological environment; and, due to the use of these natural stones and sand as aggregates The pavement bricks have low strength and short service life. On roads with a large flow of people, the breakage rate of pavement bricks is very high. To be refurbished and re-lay new paving brick...

AI Technical Summary

Problems solved by technology

However, the raw materials of this pavement brick have a great demand for natural stones and sand, and are extremely dependent on the mining of the natural environment, which has brought serious impacts on the ecological environment; and, due to the use of these natural stones and sand as aggregates The pavement bricks have low strength and short service life. On roads with a large flow of people, the breakage rate of pavement bricks is very high. To be refurbished and re-laid with new paving bricks, resulting in a waste of manpower and financial resources

[0003] However, if some high-performance additives are used to modify pavement bricks, it will definitely lead to an increase in the manufacturing cost of pavement bricks, and pavement bricks are already very cheap products. After the terminal price rises, it will definitely affect its promotion. application